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公开(公告)号：CA377733A
公开(公告)日：1938-11-15
申请号：CA377733D
Applicant: SHELL DEV
Inventor： STECK LEO V , ENGS WILLIAM , SIMO MARTIN DE
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公开(公告)号：CA366150A
公开(公告)日：1937-05-18
申请号：CA366150D
Applicant: SHELL DEV
Inventor： DEANESLY RICHARD M , STECK LEO V , WILLIAMS EVAN CLIFFORD
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